what coils do you have available that will fit an MT motor?

[MTA 0]

like the topic says

im experimenting with my RE MT to see which coil amp combination will work best, so I would like to know

thanx guys , and is there a longer version of the original dual 0.7(actual quad 1.4) coil ?? im in dire need of xmax to get louder... im hearing slapping when i get that sub moving alot( could i be bouncing off the dust cap? I dont think im bottoming out)... last time i ripped the coil right off of the spiders (quad stiff) that was with 4 ab 500.1 gain all the way down ( only got them to produce 75xx watts before sub exploded)or should I be using a different basket with 10" spiders?

btw this is a 15" with 12 spoke basket

[Fi Car Audio 64]

Im assuming this being used for SPL...

The slapping is probably the coil hitting the pole. The motors are VERY tight and I designed them for SPL only use. The fact that people like to use the for daily is what prompted me to have two different tolerences for the BTLs. Adding a different basket and 10" spiders for increased excursion wont solve much either. Even with spaced spiders, the motor is too tight for a high xmax solution (I simply didnt design it for that).

A longer coil will only create more issues as well. If you are ripping spider packs off the coils (assuming the still build them the way I had designed things) increasing Xmax would probably make things worse.

I have the original D.7 (the quad 1.4), a D.65 that is a true dual coil, and the new D1.4 (as the original D2 (1.8-2.0 DCR) can not be made due to wire cracking issues with the high flattening ratio). The MT gap is tight and is set for a specific max coil OD. Since the motors were designed around that, we cant stick many of the Fi BTL coils in them (since I can machine the motors to whatever size I need to for a specific coil).

What enclosure, class, and tuning are you using this for? I can see that power being an issue if its in a HUGE enclosure, or in some sort of Extreme 1 bandpass design. Other than that, if properly built, it should take that power.

Thanks,

Scott

[MTA 0]

Im assuming this being used for SPL...

The slapping is probably the coil hitting the pole. The motors are VERY tight and I designed them for SPL only use. The fact that people like to use the for daily is what prompted me to have two different tolerences for the BTLs. Adding a different basket and 10" spiders for increased excursion wont solve much either. Even with spaced spiders, the motor is too tight for a high xmax solution (I simply didnt design it for that).

A longer coil will only create more issues as well. If you are ripping spider packs off the coils (assuming the still build them the way I had designed things) increasing Xmax would probably make things worse.

I have the original D.7 (the quad 1.4), a D.65 that is a true dual coil, and the new D1.4 (as the original D2 (1.8-2.0 DCR) can not be made due to wire cracking issues with the high flattening ratio). The MT gap is tight and is set for a specific max coil OD. Since the motors were designed around that, we cant stick many of the Fi BTL coils in them (since I can machine the motors to whatever size I need to for a specific coil).

What enclosure, class, and tuning are you using this for? I can see that power being an issue if its in a HUGE enclosure, or in some sort of Extreme 1 bandpass design. Other than that, if properly built, it should take that power.

Thanks,

Scott

this was an original MT recone I used that ripped off the coil, the one I received from u with d0.6 is still holding up no scrape but once i put a little more power it does start to slap.

its a ported enclosure, for street C , 49-51hz, box is aprox 3.5cu.ft(after all displacements total is about 6.4cuft before port,sub and all the bondo and fibreglass I used to round off the inside) with 133 in.sq. port...dont rememebr the length... but its long... power out aprox 6000 watts reactive when it begins to happen but again the other coil was the original d0.7 this is the new one with d0.6

any more ideas?

btw I also need to speak with you in person... what time of day is good for you to talk?

we are 3hrs difference 9:30 amp here -> u will be 6:30 am

Edited August 22, 2007 by MTA